Question

The following statements were taken from the procedures of four different investigations.

Investigation Statement
1 Have four students calculate their mass and weight on four different planets in kilograms.
2 Conduct four trials of rolling a car down a 40 cm long ramp and measuring the time to calculate speed.
3 Compare the electrical conductivity of three different materials.
4 Measure the amount of water needed to spin a water wheel for 5 complete rotations in seconds.

The statement from which investigation is an example of repetition?

Responses
A Investigation 1Investigation 1
B Investigation 2Investigation 2
C Investigation 3 Investigation 3
D Investigation 4

Answer 1

B Investigation 2

It explicitly says to "conduct four trials," which is repetition (repeating the same measurement multiple times).